US9095669B2 - System for heated gas insufflation in patients - Google Patents

System for heated gas insufflation in patients Download PDF

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Publication number
US9095669B2
US9095669B2 US14/006,480 US201214006480A US9095669B2 US 9095669 B2 US9095669 B2 US 9095669B2 US 201214006480 A US201214006480 A US 201214006480A US 9095669 B2 US9095669 B2 US 9095669B2
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Prior art keywords
gas
insufflator
heated
duct
recirculation circuit
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US14/006,480
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US20140012187A1 (en
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Nicolas Anthony Costovici
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M13/00—Insufflators for therapeutic or disinfectant purposes, i.e. devices for blowing a gas, powder or vapour into the body
    • A61M13/003—Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M13/00—Insufflators for therapeutic or disinfectant purposes, i.e. devices for blowing a gas, powder or vapour into the body
    • A61M13/003—Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
    • A61M13/006—Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing with gas recirculation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature

Definitions

  • the present invention relates to a system for heated gas insufflation in patients, of the type comprising:—an insufflator provided with: a gas inlet, a valve that regulates the gas flow to be supplied, an adjustable heater for the gas to be supplied, a sensor that detects the temperature of the heated gas and an outlet for supplying the gas; and—a disposable supply duct that can be coupled to the gas outlet of the insufflator in order to convey the gas supplied and heated by the insufflator into a patient's cavity.
  • This invention is applicable in the medical field, to introduce a heated gas into a patient's cavity during different testing and surgical procedures such as colonoscopy, laparoscopy, hysteroscopy, or any others.
  • Gas heating for medical insufflators is very important.
  • heating of the gas is important to prevent fog on camera lenses and dropping of the patient's temperature during the procedure.
  • the trouble with high flow insufflators is the significant variation in flow and room temperature.
  • the gas flow supplied must be continuously regulated to maintain pressure as constant as possible in the insufflated cavity. This flow may vary from 0 to 50 liters/minute during the test or procedure to be performed.
  • insufflators having a gas inlet, a valve that regulates the flow of gas to be supplied, and an outlet for supplying the gas, to which a disposable duct that conveys the insufflator supplied gas into a patient's cavity is coupled, are well known. These insufflators are also currently used in combination with a gas heater.
  • the gas heater is arranged inside the insufflator, heating the gas before it leaves the insufflator.
  • Heating systems in which the heater is arranged outside the insufflator, are also well known, specifically at an area near the end of the duct that is intended to be introduced into a patient's cavity.
  • This solution has the advantage of preventing the loss of calories in the gas available in the duct, between the machine and the patient, but this heating system is very difficult to regulate in order to obtain a constant temperature at the output of the duct.
  • This system requires regulation of the heater on the basis of the variable gas flow supplied to the patient and use of a heater with low reaction time that may be stopped or heated when the gas flow changes. Therefore it is necessary to accurately adapt the heating to the gas flow introduced into the patient. These constraints cause that this heating system typically has a very low precision.
  • the technical problem, which arises in this invention, is the development of a system for heated gas insufflation in patients, which allows for continuous gas supply available at the duct outlet, just before the patient's cavity, at a very precise and constant temperature, irrespective of changes in the flow of gas intended to be introduced into the patient's cavity.
  • the system for heated gas insufflation in patients of this invention has features that are aimed at achieving heated gas supply and delivery to the patient at a uniform temperature, and to minimize temperature changes produced in known systems due to cooling of heated gas in its passage between the insufflator and the patient, particularly when significant fluctuations of the gas flow to be supplied to the patient are produced during the performance of a test or procedure.
  • This system is of the type comprising:—an insufflator provided with: a gas inlet, a valve that regulates the flow of gas to be supplied, an adjustable heater for the gas to be supplied, a sensor that detects the temperature of the heated gas, an outlet for supplying the gas and means for propelling the gas toward the supply outlet and;—a disposable supply duct that can be coupled to the gas outlet of the insufflator in order to convey the gas supplied and heated by the insufflator into a patient's cavity.
  • this system comprises a gas return duct connected to the supply duct at an area near the end intended to be introduced into a patient's cavity and into a heater input, the gas supply duct and the gas return duct forming a circuit for continuous circulation of heated gas at a constant supply temperature by means of the heater.
  • This system allows the supply of gas at a given temperature between 20° C. to 50° C. depending on the application to which it is intended (Laparoscopy, Hysteroscopy, CT colonography, or others).
  • the gas temperature does not vary significantly depending on the gas flow required; by providing velocity to the circulating gas, the gas supplied to the patient is not dependent on the gas available in the supply duct as in current systems.
  • the system comprises a storage reservoir between the heater and the supply duct, through which the gas heated in the insufflator circulates.
  • This storage reservoir provides a heated gas reserve and a very good heating response while avoiding sudden drops in gas temperature in case it is necessary to supply the patient with a high gas flow.
  • the supply duct has a temperature sensor at a distal area, near the end intended to be introduced into the patient's cavity.
  • This temperature sensor measures the heated gas drop between the insufflator and the area near the patient, and facilitates configuration of heater settings, especially in those cases where the patient requires the supply of a high gas flow.
  • An additional feature of the system of the invention is the provision, at least in the return duct, of filters for cleaning the circulating gas. These filters prevent possible contamination of the insufflator by the circulating gas.
  • the gas recirculation circuit has an exhaust valve through which controlled exhaust of the circulating heated gas is carried out.
  • This relief valve ensures continued gas flow from the insufflator to the supply duct, preventing the return of gas through said supply duct from the patient to the insufflator and possible contamination in the insufflator due to the return of gas through the supply duct.
  • the heated gas recirculation circuit comprises, at least, one mechanical safety valve arranged inside the insufflator, and an electronic safety valve for releasing possible gas overpressure in the recirculation circuit outside.
  • said electronic safety valve may be arranged: either inside the insufflator and connected to the gas recirculation circuit at an area located between the return duct and the heater, said electronic safety valve having an outlet to the insufflator outside, or outside the insufflator and connected to the distal area of the gas supply duct, by means of a bypass duct.
  • This external arrangement of the electronic safety valve further reduces the risk of contamination of the insufflator.
  • FIG. 1 shows a schematic view of an embodiment example of the system for heated gas insufflation in patients according to the invention, and in which the electronic safety valve against overpressures is arranged inside the insufflator.
  • FIG. 2 shows a schematic view of an alternative embodiment of the system according to the invention, wherein the electronic safety valve against overpressures is arranged outside the insufflator and connected to the gas recirculation circuit by means of a bypass duct.
  • the insufflator in its entirety as ( 1 ), has a gas inlet ( 2 ), a valve ( 3 ) that regulates the flow of gas to be supplied, an adjustable heater ( 4 ) for the gas to be supplied, a sensor ( 5 ) that detects the temperature of the heated gas, an outlet ( 6 ) for supplying the gas, and means ( 7 ) for propelling the gas toward the supply outlet ( 6 ).
  • the system further comprises a disposable supply duct ( 8 ), that may be coupled to the insufflator outlet ( 6 ) in order to convey the gas, heated and supplied by the insufflator ( 1 ), into a patient's cavity, and a return duct ( 9 ) for the gas, connected to the supply duct ( 8 ) in an area near the end intended to be introduced in a patient's cavity and to an inlet of the heater ( 4 ).
  • a disposable supply duct ( 8 ) that may be coupled to the insufflator outlet ( 6 ) in order to convey the gas, heated and supplied by the insufflator ( 1 ), into a patient's cavity
  • a return duct ( 9 ) for the gas connected to the supply duct ( 8 ) in an area near the end intended to be introduced in a patient's cavity and to an inlet of the heater ( 4 ).
  • the gas supply duct ( 8 ) and the gas return duct ( 9 ) form a continuous circulation circuit for the heated gas at a constant supply temperature, and propelled by the propelling means ( 7 ).
  • the system comprises a storage reservoir ( 10 ) situated between the heater ( 4 ) and the supply duct ( 8 ), and through which the gas heated in the insufflator circulates, said storage reservoir ( 10 ) maintaining a heated gas reserve allowing for a supply of 50 liters/minute of gas, without inducing appreciable temperature variation.
  • the supply duct ( 8 ) has a temperature sensor ( 11 ), which measures the temperature drop of the gas circulating between the heater ( 4 ) and the gas introduction area into the patient, and facilitates adjustment of the heater ( 4 ) in order to ensure the introduction of gas into the patient at a stable and determined temperature.
  • the system comprises an exhaust valve ( 12 ) through which controlled exhaust of the circulating gas is adjusted, thus ensuring a continuous flow thereof from the heater ( 4 ) toward the return duct ( 9 ).
  • the system comprises, in the supply duct ( 8 ) and in the return duct, filters ( 13 ) for cleaning the circulating gas and to prevent the contamination of the insufflator ( 1 ).
  • the system comprises, in the gas recirculation circuit, a mechanical safety valve ( 14 ), which is arranged inside the insufflator ( 1 ).
  • the system comprises an electronic safety valve ( 15 ) for releasing gas overpressures in the gas recirculation circuit to the outside.
  • said electronic safety valve ( 15 ) is arranged inside the insufflator ( 1 ) and connected to the gas recirculation circuit in an area between the return duct ( 9 ) and the heater ( 4 ), said electronic safety valve ( 15 ) having an outlet to the outside of the insufflator ( 1 ).
  • said electronic safety valve ( 15 ) is advantageously arranged outside the insufflator ( 1 ) and connected to the distal area of the gas supply duct ( 8 ) by means of a bypass duct ( 16 ). This external arrangement of the electronic safety valve ( 15 ) further reduces the risk of contamination of the insufflator.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Surgical Instruments (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
US14/006,480 2011-03-31 2012-03-27 System for heated gas insufflation in patients Active 2032-05-13 US9095669B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES201130500 2011-03-31
ESP201130500 2011-03-31
ES201130500A ES2363550B2 (es) 2011-03-31 2011-03-31 Sistema para la insuflación de gas calefaccionado en pacientes
PCT/ES2012/000074 WO2012131120A1 (fr) 2011-03-31 2012-03-27 Système pour l'insufflation de gaz chauffé à des patients

Publications (2)

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US20140012187A1 US20140012187A1 (en) 2014-01-09
US9095669B2 true US9095669B2 (en) 2015-08-04

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US14/006,480 Active 2032-05-13 US9095669B2 (en) 2011-03-31 2012-03-27 System for heated gas insufflation in patients

Country Status (9)

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US (1) US9095669B2 (fr)
EP (1) EP2692383B1 (fr)
JP (1) JP6022534B2 (fr)
CN (1) CN103442759A (fr)
CA (1) CA2830823A1 (fr)
ES (1) ES2363550B2 (fr)
SG (1) SG192229A1 (fr)
WO (1) WO2012131120A1 (fr)
ZA (1) ZA201307025B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11529475B2 (en) * 2013-01-15 2022-12-20 Fisher & Paykel Healthcare Limited Insufflation apparatus and methods and a gas generating cartridge therefor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018089986A2 (fr) * 2016-11-14 2018-05-17 Conmed Corporation Système de distribution de gaz chirurgical multimodal ayant une surveillance de pression continue d'un flux continu de gaz vers une cavité corporelle
EP4000672A4 (fr) * 2019-07-15 2023-08-16 Seoul National University Hospital Système de circulation de gaz sous pression hyperthermique dans une cavité péritonéale, et système de fourniture de gaz intrapéritonéale comprenant une buse à deux fluides
DE102019120699A1 (de) * 2019-07-31 2021-02-04 Wagner Group Gmbh Gasmessvorrichtung mit Heizeinrichtung

Citations (15)

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US3856051A (en) 1972-02-28 1974-12-24 J Bain Flexible tube device
US5006109A (en) 1989-09-12 1991-04-09 Donald D. Douglas Method and device for controlling pressure, volumetric flow rate and temperature during gas insuffication procedures
US5400778A (en) * 1990-06-18 1995-03-28 Siemens-Elema Ab Method and device for reduction of rebreathing of gas from dead space
US5411474A (en) 1993-07-14 1995-05-02 Douglas E. Ott Method and apparatus for conditioning insufflation gas for laparoscopic surgery
WO1999027988A1 (fr) 1997-12-04 1999-06-10 Medisize B.V. Systeme de respiration artificielle
US6041777A (en) * 1995-12-01 2000-03-28 Alliance Pharmaceutical Corp. Methods and apparatus for closed-circuit ventilation therapy
US6131571A (en) * 1997-04-30 2000-10-17 University Of Florida Ventilation apparatus and anesthesia delivery system
EP1192968A1 (fr) 2000-09-29 2002-04-03 DHD Healthcare Corporation Système de derivation d'un échangeur thermo-hydrique
WO2003092776A2 (fr) 2002-05-01 2003-11-13 Air Products And Chemicals, Inc. Système de recirculation de gaz médical
US20040045549A1 (en) 2000-06-21 2004-03-11 Smith Daniel John Conduit with heated wick
US20070157929A1 (en) * 2005-12-23 2007-07-12 Draeger Medical Ag & Co. Kg Respirator with active dehumidification
US20090107982A1 (en) * 2007-10-29 2009-04-30 Smiths Medical Asd, Inc. Heated breathing circuit detection
US7591267B2 (en) * 2005-09-06 2009-09-22 General Electric Company Room temperature heat exchanger for breathing circuit
US7814908B2 (en) * 2003-11-19 2010-10-19 Maquet Critical Care Ab Method and device for reducing the carbon dioxide content in a dead volume
US7870857B2 (en) * 2005-05-23 2011-01-18 Aeon Research And Technology, Inc. Patient interface assemblies for use in ventilator systems to deliver medication to a patient

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JP4573556B2 (ja) * 2004-03-31 2010-11-04 オリンパス株式会社 送気装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856051A (en) 1972-02-28 1974-12-24 J Bain Flexible tube device
US5006109A (en) 1989-09-12 1991-04-09 Donald D. Douglas Method and device for controlling pressure, volumetric flow rate and temperature during gas insuffication procedures
US5400778A (en) * 1990-06-18 1995-03-28 Siemens-Elema Ab Method and device for reduction of rebreathing of gas from dead space
US5411474A (en) 1993-07-14 1995-05-02 Douglas E. Ott Method and apparatus for conditioning insufflation gas for laparoscopic surgery
US6041777A (en) * 1995-12-01 2000-03-28 Alliance Pharmaceutical Corp. Methods and apparatus for closed-circuit ventilation therapy
US6131571A (en) * 1997-04-30 2000-10-17 University Of Florida Ventilation apparatus and anesthesia delivery system
WO1999027988A1 (fr) 1997-12-04 1999-06-10 Medisize B.V. Systeme de respiration artificielle
US20040045549A1 (en) 2000-06-21 2004-03-11 Smith Daniel John Conduit with heated wick
EP1192968A1 (fr) 2000-09-29 2002-04-03 DHD Healthcare Corporation Système de derivation d'un échangeur thermo-hydrique
WO2003092776A2 (fr) 2002-05-01 2003-11-13 Air Products And Chemicals, Inc. Système de recirculation de gaz médical
US7814908B2 (en) * 2003-11-19 2010-10-19 Maquet Critical Care Ab Method and device for reducing the carbon dioxide content in a dead volume
US7870857B2 (en) * 2005-05-23 2011-01-18 Aeon Research And Technology, Inc. Patient interface assemblies for use in ventilator systems to deliver medication to a patient
US7591267B2 (en) * 2005-09-06 2009-09-22 General Electric Company Room temperature heat exchanger for breathing circuit
US20070157929A1 (en) * 2005-12-23 2007-07-12 Draeger Medical Ag & Co. Kg Respirator with active dehumidification
US20090107982A1 (en) * 2007-10-29 2009-04-30 Smiths Medical Asd, Inc. Heated breathing circuit detection

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11529475B2 (en) * 2013-01-15 2022-12-20 Fisher & Paykel Healthcare Limited Insufflation apparatus and methods and a gas generating cartridge therefor

Also Published As

Publication number Publication date
EP2692383A1 (fr) 2014-02-05
CA2830823A1 (fr) 2012-10-04
EP2692383B1 (fr) 2017-06-28
ZA201307025B (en) 2014-05-28
JP6022534B2 (ja) 2016-11-09
WO2012131120A1 (fr) 2012-10-04
SG192229A1 (en) 2013-09-30
EP2692383A4 (fr) 2014-10-22
ES2363550B2 (es) 2012-02-24
CN103442759A (zh) 2013-12-11
US20140012187A1 (en) 2014-01-09
ES2363550A1 (es) 2011-08-08
JP2014513616A (ja) 2014-06-05

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